Bayer MaterialScience’s US business has announced a new polyurethane technology for the direct production of foams permitting much greater air through-flow than with current processes. Enhanced air flow and the transfer of moisture away from the body are desirable traits in a number of end-use polyurethane foam applications, notes Bayer. These include mattresses, cosmetic pads and lawn furniture. Most high-porosity foams are produced by a chemical or mechanical reticulation process that involves an extra process step to enhance air flow capacity. Bayer claims that, using the new technology, foam manufacturers can more efficiently produce a variety of foams, including conventional, viscoelastic and specialised types such as hydrophilic and semi-rigid foams.